About to Buy -- What do you think ?

Sounds like an amazing set up. As much as I know the 17-55 is a great lens for the money my preference would the 70-200 f4 and say a Samyang/Rokinon 14mm 2.8 If you plan on spending more on wider and telephoto then you could leave them for later. Or go the whole hog and get a 10-22.